#!/bin/sh

# Copyright (c) 2025 Franco Fichtner <franco@opnsense.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

OWNERSHIP=$(opnsense-version -R 'CORE_GROUP=CORE_GID:CORE_USER=CORE_UID')
OWNERGRP=${OWNERSHIP%:*}
OWNERUSR=${OWNERSHIP##*:}

PW=/usr/sbin/pw
GROUP=${OWNERGRP%=*}
GID=${OWNERGRP##*=}
USER=${OWNERUSR%=*}
UID=${OWNERUSR##*=}
OWNER="${USER}:wheel"

PW_ARG=add
if ${PW} groupshow ${GROUP} >/dev/null 2>&1; then
    PW_ARG=mod
fi

${PW} group${PW_ARG} ${GROUP} -g ${GID}

PW_ARG=add
if ${PW} usershow ${USER} >/dev/null 2>&1; then
    PW_ARG=mod
fi

${PW} user${PW_ARG} ${USER} -u ${UID} -g ${GID} -c "World Wide Web Only" -d /nonexistent -s /usr/sbin/nologin

# set up required output directories for various PHP components
for _PHPDIR in cache sessions tests tmp; do
	PHPDIR=/var/lib/php/${_PHPDIR}

	mkdir -p ${PHPDIR}
	if [ "${_PHPDIR}" = "tmp" ]; then
		# special permission here
		chmod 01777 ${PHPDIR}
	else
		chmod 750 ${PHPDIR}
	fi

	chown -R ${OWNER} ${PHPDIR}
done

# ensure that "other" can access the tmp dir later on
chmod 755 /var/lib /var/lib/php

# change ownership for GUI related file access
mkdir -p /conf/backup
find /conf -name 'vouchers_*.db' -exec chown ${OWNER} {} \;
find /conf/backup -name '*.xml' -exec chown ${OWNER} {} \;
for PHPOWN in /conf /conf/config.xml /conf/backup /var/run/booting; do
	if [ -e ${PHPOWN} ]; then
		chown ${OWNER} ${PHPOWN}
	fi
done

# flush Phalcon volt templates
find /var/lib/php/cache -name '*.php' -exec rm {} \;
